Unlike older BlackBerrys, the Z10 and future models don't require tiers with BlackBerry Internet Service or BlackBerry Enterprise Server support in order to work their push messaging magic. Those migrating from a regular BlackBerry plan won't have to worry about switching, though. The lone exceptions are subscribers who have barebones, social-only plans where BIS serves as the filter. While the switch could lead to price hikes for those cost-conscious users, it's otherwise good news for BlackBerry devotees who've wanted the same choice in service as the rest of their smartphone-owning peers.

Unlike older BlackBerrys, the Z10 and future models don't require tiers with BlackBerry Internet Service or BlackBerry Enterprise Server support in order to work their push messaging magic. Those migrating from a regular BlackBerry plan won't have to worry about switching, though. The lone exceptions are subscribers who have barebones, social-only plans where BIS serves as the filter. While the switch could lead to price hikes for those cost-conscious users, it's otherwise good news for BlackBerry devotees who've wanted the same choice in service as the rest of their smartphone-owning peers.

That would mean that either your carrier blocks https traffic (which is also used by AS) - sound not likely, or, they are able by provisioning the device to disable some of its features - not nice, but possible.

I think you will see the carriers offer the Z10 with the regular data plan and Imply it will be cheaper. Reality, the people who have current unlimited data plans will be switched to one that is limited and therefor actually end up costing more because of the data usage as mentioned above.
It's all about the bottom line.

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Is data use really going to go up.? for those of us that use these phones as a business tool...i can't see it. For those that are switching from iwhatever, then yea, i could surely see that...or am I missing something here.?

I do understand however the changes will in fact affect those with the barebones type of plans..